Check the listing for details. Smart Posture Correction Device Posture Training Device CorrectorChild. Color: Black, Condition: New. Listed at 39.99 USD. This intelligent posture corrector is made of high quality silicone material, which is lightweight, durable, soft and skin-friendly, providing a comfortable wearing experience. This innovative product is designed to help children develop and maintain good posture. Its advanced technology includes an adjustable strap and a vibration alert to remind your child when their posture is wrong. It also tracks the child's posture via the Bluetooth app, offering data-driven information to track progress and improvements. Get real-time feedback to help ensure your child's health and posture! Functions Tracks your posture in real time with interactive games and professional training courses to help you correct unhealthy posture scientifically and effectively. Tailor-made exclusive training courses targeting major parts such as neck, back and waist to train back muscles and strengthen muscle memory. The built-in high-precision motion sensor chip and intelligent gesture recognition algorithm accurately capture pose actions, real-time remind of them, and correct poses. Helps correct misalignment of the back and shoulders to improve posture and beautiful curves after 21 days of use. Bluetooth APP design and one button operation for easy switching and operation. Suitable for sedentary office workers, people with head bowed, students and those who do not sit or cross their legs properly. (Not suitable for children under three years old.) Specifications: Material: silica gel Color: black, red, yellow Size: 137*167mm (adult model) Weight: 0.061 kg / 0.148 kg Package size: 18.8 14.3 3.1 cm Charging time: 1.5 hours Service life: 90 hours